Answer:
B
Step-by-step explanation:
Our equation is x² + 7x - 4 = 0. We need to use the quadratic formula, which states that for a quadratic formula of the form ax² + bx + c = 0, then the zeroes/solutions are: or .
Here, a = 1, b = 7, and c = -4. Plug these in:
OR
Thus, the answer is B.
Answer:
Its 7
Step-by-step explanation:
when x is 18 y is 6. 18 divided by 6 is 3.
so x is 21 divided by 3 is 7.
Answer:
6 apples per pie
Step-by-step explanation:
2x+7=19
x=# of apples per pie
Subtract 7 from both sides:
2x=12
Divide both sides by 2:
x=6
40 x 0.45 = 18 students are boys
Answer:
1
Step-by-step explanation:
This shows how to multiply fractions. When you multiply fractions, you just multiply across, and then simplify.